76678977 has 4 divisors (see below), whose sum is σ = 102238640. Its totient is φ = 51119316.

The previous prime is 76678967. The next prime is 76678991. The reversal of 76678977 is 77987667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 76678977 - 2⁴ = 76678961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76678967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12779827 + ... + 12779832.

It is an arithmetic number, because the mean of its divisors is an integer number (25559660).

Almost surely, 2^76678977 is an apocalyptic number.

It is an amenable number.

76678977 is a deficient number, since it is larger than the sum of its proper divisors (25559663).

76678977 is a wasteful number, since it uses less digits than its factorization.

76678977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25559662.

The product of its digits is 6223392, while the sum is 57.

The square root of 76678977 is about 8756.6532990635. The cubic root of 76678977 is about 424.8400357623.

The spelling of 76678977 in words is "seventy-six million, six hundred seventy-eight thousand, nine hundred seventy-seven".